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rodyager / RWTS-PDFwriter

An OSX print to pdf-file printer driver
GNU General Public License v2.0
798 stars 77 forks source link

Not really an issue but... #1

Closed Chilly0046 closed 8 years ago

Chilly0046 commented 8 years ago

Only prints at 300dpi, really would be great to have 600dpi, as everything else is spot on :)

shamims commented 8 years ago

Echo this request! Ability to choose DPI would be a huge win. :)

rodyager commented 8 years ago

Well, actually, it does NO downsampling. It creates a pdf file in which any bitmap images are at the resolution that the application sent to the OS for "printing". For example, this 1200 dpi checkerboard png is "printed" at 1200 dpi by PDFwriter when printed from preview. If it were 300 dpi, the pdf would be a uniform grey under high magnification. checker

Chilly0046 commented 8 years ago

I see an all grey Image?

Mike

On 20 July 2016 at 23:50, Rod Yager notifications@github.com wrote:

Well, actually, it does NO downsampling. It creates a pdf file in which any bitmap images are at the resolution that the application sent to the OS for "printing". For example, this 1200 dpi checkerboard png is "printed" at 1200 dpi by PDFwriter when printed from preview. If it were 300 dpi, the pdf would be a uniform grey under high magnification. [image: checker] https://cloud.githubusercontent.com/assets/1384461/17005824/ca902f1a-4f1f-11e6-9aaa-fe7c202cb3a7.png

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/rodyager/RWTS-PDFwriter/issues/1#issuecomment-234108246, or mute the thread https://github.com/notifications/unsubscribe-auth/ATmkBHt45gQwNvMJR6gxwxzDowVF_AeQks5qXqZTgaJpZM4JQkPf .

rodyager commented 8 years ago

You need to zoom in an awful lot to see the detail. The image is a checkerboard pattern of 1 pixel by 1 pixel black and white squares at 1200 dpi.

That’s the point. At 300 dpi or even 600 dpi, it is uniformly grey. Only at 1200 dpi can you see that there is alternating black and white detail.

Rod

On 21 Jul. 2016, at 9:06 am, Chilly0046 notifications@github.com<mailto:notifications@github.com> wrote:

I see an all grey Image?

Mike

On 20 July 2016 at 23:50, Rod Yager notifications@github.com<mailto:notifications@github.com> wrote:

Well, actually, it does NO downsampling. It creates a pdf file in which any bitmap images are at the resolution that the application sent to the OS for "printing". For example, this 1200 dpi checkerboard png is "printed" at 1200 dpi by PDFwriter when printed from preview. If it were 300 dpi, the pdf would be a uniform grey under high magnification. [image: checker] https://cloud.githubusercontent.com/assets/1384461/17005824/ca902f1a-4f1f-11e6-9aaa-fe7c202cb3a7.png

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/rodyager/RWTS-PDFwriter/issues/1#issuecomment-234108246, or mute the thread https://github.com/notifications/unsubscribe-auth/ATmkBHt45gQwNvMJR6gxwxzDowVF_AeQks5qXqZTgaJpZM4JQkPf .

— You are receiving this because you commented. Reply to this email directly, view it on GitHubhttps://github.com/rodyager/RWTS-PDFwriter/issues/1#issuecomment-234110984, or mute the threadhttps://github.com/notifications/unsubscribe-auth/ABUgDaKMJ3rh_8QRFjjIXg3KffXf3n-qks5qXqn5gaJpZM4JQkPf.

Chilly0046 commented 8 years ago

OK, I just tried a print at 600 dpi to the PDF writer, and a 300dpi the same and compared.

The 600 is much better, so thanks, it DOES do what I wanted it to,

Many thanks for your replys.

Best regards, Mike

On 21 July 2016 at 00:12, Rod Yager notifications@github.com wrote:

You need to zoom in an awful lot to see the detail. The image is a checkerboard pattern of 1 pixel by 1 pixel black and white squares at 1200 dpi.

That’s the point. At 300 dpi or even 600 dpi, it is uniformly grey. Only at 1200 dpi can you see that there is alternating black and white detail.

Rod

On 21 Jul. 2016, at 9:06 am, Chilly0046 <notifications@github.com<mailto: notifications@github.com>> wrote:

I see an all grey Image?

Mike

On 20 July 2016 at 23:50, Rod Yager <notifications@github.com<mailto: notifications@github.com>> wrote:

Well, actually, it does NO downsampling. It creates a pdf file in which any bitmap images are at the resolution that the application sent to the OS for "printing". For example, this 1200 dpi checkerboard png is "printed" at 1200 dpi by PDFwriter when printed from preview. If it were 300 dpi, the pdf would be a uniform grey under high magnification. [image: checker] < https://cloud.githubusercontent.com/assets/1384461/17005824/ca902f1a-4f1f-11e6-9aaa-fe7c202cb3a7.png>

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub < https://github.com/rodyager/RWTS-PDFwriter/issues/1#issuecomment-234108246>,

or mute the thread < https://github.com/notifications/unsubscribe-auth/ATmkBHt45gQwNvMJR6gxwxzDowVF_AeQks5qXqZTgaJpZM4JQkPf>

.

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